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F3 L. BROOKES. METHOD OF AGGUMULATING $HEBTS FOR PRINTING MACHINES.

N0. 376,288. Patented Jan. 10, 1888.

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(No Model.) 3 Sheets-Sheet 2. L. E. BR OOKES. METHOD OF AGGUMULATING SHEETS FOR PRINTINGMAGHINBS. No. 376,288. Patented Jan. 10, 1888.

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METHOD QF AGGUMULATING SHEETS FOR PRINTING MACHINES. No. 376,288. v 'Pat-en'ted Jan. 10, 1 888.

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PATENT ()rrrcn.

LEONARD E. BROOKES,-OF CHICAGO, ILLINOIS, ASSIGNOR TO THE GOSS PRINTING PRESS COMPANY, OF SAME PLACE.

METHOD OF ACCUMULATING SHEETS FOR PRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 375,288, dated January I0, 1888.

(No model.)

been severed from the web, to be delivered sit multaneously.

I am aware that'there are numerous devices which have been used heretofore for accom plishing the same ultimate general purpose that I accomplish by my present invention, and which involve mechanisms to associate two or more sheets previously severed from the successivelyprinting and traveling surface of web issuing from a web printing machine.

It is my object to produce two or morescparatesheets simultaneously on a revolving carrier and deliver them'togethcr, with a final sheet for the accumulation subsequentl cut from the web.

My invention consists, broadly, in the method of producing an accumulationof the sheets for their simultaneous delivery by first winding the printed web upon a revolving carrier to produce two or more layers of Web on the carrier, severing the web so wound at a predetermined line, then leading off at the leading end thereof all that has been so severed, and with it thecoincident leading end of the web, and, finally, severing the web to produce the final sheet of the accumulation. This method of accumulation insures accurate coincidence of the sheets, thereby permitting them to be folded evenly after being delivcred, which is not the case where the printed web is first severed and the sheets afterward collected.

I intend that the mechanism hereinafter de scribed, and illustrated in the accompanying drawings, shall form the subject of a future application for Letters Patent.

In the drawings, Figures 1 to 5, inclusive,

all in broken sectional side elcvation,illustrate the operation of my apparatus progress ively and present it in a form involving a pneumatic attachment for attracting and hold ing the forward end of the web to the surface of the revolving carrier during the winding operation and releasing it for the discharge of the severed sheets.

The printed web enters between cylinders A and B, constituting, respectively, the male and female knife cylinders, having on the former the knife J and on the latter a longitudinal groove, I,to receive the knife. D is a four-way cook operated by a cam, 70, to bring a suct.ion-pipe, E, into communication with small openings 1) in the periphery of the cylinder A, (which constitutes the revolving carrier, though the cylinder 13 may, instead, be arranged for the purpose,) by means of a pipe, 0, a hollow shaft, 0, and a connectingpipe, H. The leading end a of the printed web is thus attracted to and carried or wound around the cylinder A, the circumference of which is exactly equal to the length required for each sheet upon the web. The web is wound around the cylinder A a predetermined number of timeshvhen the accumulated layers are severed at the line of the leading end of the web by the cutting mechanism I J, the knife portion of which is operated by a heel-plate, d, forced against a bent lever, T, to one end of which the knife is secured, and carrying at its free end a thimble or roller, 11, as shown, and in connection with the cam is, through the medium of a shaft, 6, working in a bearing,f, and having a fork, e, embracing the shaft Z, carrying the cam. The four-way valve D is then operated to bring a blast-pipe, F, into communication with the opening I) in the cylinder A, which blast-pipe operates to release the forward or leading end of the sheets thus formed by the severing operation t brought to bear upon the folded or wound web, and the sheets and. leading end of the said collarand bearingf, and the sheet-directing fingers L.

The revolving carrier must make a predetermined number of revolutions to wind upon itselfa desired number of layersthatis, two or moreot the printed web, and thereby afford a corresponding number of accumulated sheets,when the web is severed in the manner described; but it will wind the printed web upon its periphery one layer less than the number ol'sheets required or desired to be associated, the rear end of the last sheet of the desired number not yet having been severed from the web. The leading ends of the accumulated sheets, after the production of the latter by the operation of the web-cutting mechanism I J, are directed with the leading end of the web into the bite of the sheet-carrying tapes P Q, by the continued revolution of the cylinders A and B, and at the completion of the last-named revolution the web is severed to produce the last sheet of the number desired, which is thus not wound upon the rotary carrier A, and the leading end of the first sheet of the predetermined number or series next to be accumulated by a repetition of the operation, as indicated in Fig. 5.

In winding the web the cam 7r, (shown in Figs. 2 and 3,) operates to work the knife H during the third revolution ofthe cylinder A, so as to be ready to work at the completion of the third revolution and fourth revolution, at which latter it will cut the web at the rear end of the line of the three accumulated sheets produced by the previous cutting, thereby producing, for a sixteen-page paper, three sheets around the cylinder and one subsequently from the web without winding it about the cylinder. The cam k, as will be noticed, is semi-cylindrical about one-half, and wider there with relation to the center than on the opposite half, whereby it throws the knife J out during two revolutions of the cylinder and allows it to remain in during the next two such revolutions. For accumulating two layers on the cylinder A, for a twelvepage paper, or more than three layers, the cam may be formed and arranged to operate accordingly.

In Fig. 3 gearing is illustrated which actuatcs the cam k to operate the knife for the purpose described. A gear-wheel, 12, carrying a pinion, l3, meshes with a pinion, 11, of one-half its size, on the cylinder B. The

The pinion 15 engages with a pinion, 17, on the cam It, through an intermediate pinion, 16, all the pinions being of the same size. It will thus be seen that the cylinders revolve four times while the cam revolves once, forcing the knife and holding it out during the last two of the four revolutions of the cylinders, and allowing it to remain in the first two revolutions.

It will of course be understood that the cylinders A and B, working in suitable bearings and geared together by means of toothed wheels, and the cam operating the blast and suction device, controlled by the fourway valve D, are driven by suitable mechanism or gearing to work uniformly or 'intermittently, as the case may be; also,that the sheet-directing fingers L are capable of being adjusted in a manner to form a bridge between the cylin' ders B and the shectcarrying tapes P and Q, Fig. 4.

As these various mechanisms constitute no part of my invention, but are old in analogous connections for somewhat similar purposes, I do not encumber the present drawings by illustrating them, since my improvement and the operation are readily intelligible withoutthem to those skilled in the art to which my invention relates.

Ifitis desired to produce whatare commonly known as half-sheets or four-page papers, instead of eight-page, or papers of a still greater number of pages, the air-blast may be made to work continuously and the cutting or web-severing mechanism to operate at each revolution of the cylinders A and B; and in this manner each succeeding sheet is directed into the bite of the sheet-carrying tapes P and Q by means of the blast from the opening I) in the cylinder A and the sheet-directing fingers L.

What I claim as new, and desire to secure by Letters Patent, is

The method of producing an accumulation of sheets fortheirsinmltaneous delivery, which consists in winding the web upon a revolving carrier to produce two or more layers of web on the carrier, severing the layers at a predetermined line, leading off with the web the sheets produced by the severing operation, and finally severing the web at the rear end of the accumulated sheets to produce the final sheet of the accumulation, substantially as de In presence of- J. W. DYRENFORTH, FRANK L. DOUGLAS. 

